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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/desktop_session_agent.h"
#include "base/logging.h"
#include "base/single_thread_task_runner.h"
#include "base/stringprintf.h"
#include "base/utf_string_conversions.h"
#include "base/win/scoped_handle.h"
#include "base/win/win_util.h"
#include "ipc/ipc_channel.h"
#include "ipc/ipc_channel_proxy.h"
#include "remoting/base/auto_thread_task_runner.h"
#include "remoting/host/win/launch_process_with_token.h"
using base::win::ScopedHandle;
namespace remoting {
// Provides screen/audio capturing and input injection services for
// the network process.
class DesktopSessionAgentWin : public DesktopSessionAgent {
public:
DesktopSessionAgentWin(
scoped_refptr<AutoThreadTaskRunner> caller_task_runner,
scoped_refptr<AutoThreadTaskRunner> io_task_runner);
virtual ~DesktopSessionAgentWin();
protected:
virtual bool DoCreateNetworkChannel(
IPC::PlatformFileForTransit* client_out,
scoped_ptr<IPC::ChannelProxy>* server_out) OVERRIDE;
private:
DISALLOW_COPY_AND_ASSIGN(DesktopSessionAgentWin);
};
DesktopSessionAgentWin::DesktopSessionAgentWin(
scoped_refptr<AutoThreadTaskRunner> caller_task_runner,
scoped_refptr<AutoThreadTaskRunner> io_task_runner)
: DesktopSessionAgent(caller_task_runner, io_task_runner) {
}
DesktopSessionAgentWin::~DesktopSessionAgentWin() {
}
bool DesktopSessionAgentWin::DoCreateNetworkChannel(
IPC::PlatformFileForTransit* client_out,
scoped_ptr<IPC::ChannelProxy>* server_out) {
// Generate a unique name for the channel.
std::string channel_name = IPC::Channel::GenerateUniqueRandomChannelID();
// presubmit: allow wstring
std::wstring user_sid;
if (!base::win::GetUserSidString(&user_sid)) {
LOG(ERROR) << "Failed to query the current user SID.";
return false;
}
// Create a security descriptor that will be used to protect the named pipe in
// between CreateNamedPipe() and CreateFile() calls before it will be passed
// to the network process. It gives full access to the account that
// the calling code is running under and denies access by anyone else.
std::string security_descriptor = base::StringPrintf(
"O:%1$sG:%1$sD:(A;;GA;;;%1$s)", WideToUTF8(user_sid).c_str());
// Create a connected IPC channel.
ScopedHandle client;
scoped_ptr<IPC::ChannelProxy> server;
if (!CreateConnectedIpcChannel(channel_name, security_descriptor,
io_task_runner(), this, &client, &server)) {
return false;
}
*client_out = client.Take();
*server_out = server.Pass();
return true;
}
// static
scoped_ptr<DesktopSessionAgent> DesktopSessionAgent::Create(
scoped_refptr<AutoThreadTaskRunner> caller_task_runner,
scoped_refptr<AutoThreadTaskRunner> io_task_runner) {
return scoped_ptr<DesktopSessionAgent>(new DesktopSessionAgentWin(
caller_task_runner, io_task_runner));
}
} // namespace remoting
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